Today the revelation people here in Ferguson Missouri have been demanding. The -- -- that was involved in the shooting of Michael Brown was Darren Wilson. The police chief releasing the officer's name after an overwhelming outcry from protesters. And encouragement from the governor -- -- think it's just one step in the process here and it's an important step police say Saturday officer Wilson a six year veteran of the -- and police force was on his -- it will call of an aggressive armed robbery she only here in -- just released surveillance images. The police report says both Michael Brown at his friend -- and Johnson were identified the suspects and were walking nearby when they were stopped by officer Wilson. Investigators still trying to figure out what happened next but the police chief says Wilson was hurt by one of the team. He was treated for injuries which occurred on Saturday. Witnesses maintained there was no -- and that brown who was unarmed had his hands up when he was shot and killed the -- Tensions sparked by his -- finally called me last night hundreds of people taking to the streets peacefully protesting. And shouldn't. In solidarity. And that's coming after a change in police tactic no more right here armored trucks -- -- the state Highway Patrol is taken over security here. Protesters support happy about that but still demanding that investigators explain why an unarmed teenager -- skills. -- Gonzales ABC news Ferguson Missouri.

This transcript has been automatically generated and may not be 100% accurate.

Now Playing: Is it mandatory to stand for the US national anthem?

Now Playing: Groom rescues 'panicked' boy from water during wedding photo shoot

Now Playing: Mom of 4 shares exhausting reality of life as a working mother

Now Playing: Paul Ryan weighs in on national anthem controversy

Now Playing: Trump to travel to Puerto Rico after Hurricane Maria

Now Playing: National anthem controversy continues with Steelers, Cowboys

{"id":24997831,"title":"Dead Missouri Teen Was 'Primary Suspect' in Robbery","duration":"1:37","description":"Authorities say Michael Brown was a suspect in a convenience store robbery that occurred shortly before his death.","url":"/GMA/video/dead-missouri-teen-was-primary-suspect-in-robbery-24997831","section":"GMA","mediaType":"default"}